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Electrospinning has been widely to produce polymeric nanofibers due to simple method and feasibility of large scale production.Polymeric nanofibers have become attractive materials due to high surface area,superior mechanical properties and similarity of the extracellular matrix (ECM) [1].Therefore,electrospun nanofibers have been used in diverse fields such as drug delivery system and tissue engineering.For the purpose of drug delivery,drugs can be simply mixed with polymers through single nozzle electrospinning which often results in burst release of drug at the initial stages.